Serene A Abbas. (2012). Prevalence of vision impairment and its associated factors among elderly attending a primary care clinic.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Serene A Abbas. Prevalence of Vision Impairment and Its Associated Factors Among Elderly Attending a Primary Care Clinic. 2012.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Serene A Abbas. Prevalence of Vision Impairment and Its Associated Factors Among Elderly Attending a Primary Care Clinic. 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.